Android 在页面视图滑动中添加新片段
每次我在最后一个片段上向右或在第一个片段上向左键入时,我都要动态地添加一个新片段。此片段将添加到我的adapater中,该adapater将设置为我的viewPager。现在,我在setupViewPager中定义了一个静态数量的片段,它们在OnCreate方法中“加载”。这是我的密码:Android 在页面视图滑动中添加新片段,android,android-fragments,adapter,viewpage,Android,Android Fragments,Adapter,Viewpage,每次我在最后一个片段上向右或在第一个片段上向左键入时,我都要动态地添加一个新片段。此片段将添加到我的adapater中,该adapater将设置为我的viewPager。现在,我在setupViewPager中定义了一个静态数量的片段,它们在OnCreate方法中“加载”。这是我的密码: import android.content.Intent; import android.os.Bundle; import android.support.design.widget.NavigationV
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.support.android.designlibdemo.Diafragment;
import com.support.android.designlibdemo.R;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
private ViewPager viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
viewPager = findViewById(R.id.viewpager);
if (viewPager != null) {
setupViewPager(viewPager);
}
Intent intent = getIntent();
String nome = intent.getStringExtra("nome");
View headerView = navigationView.getHeaderView(0);
TextView navUsername = headerView.findViewById(R.id.tv_drawerUsername);
navUsername.setText(nome);
TabLayout tabLayout = findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
SimpleDateFormat sdf = new SimpleDateFormat("EEE");
Date date = new Date();
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
date = calendar.getTime();
String day = sdf.format(date);
Adapter adapter = new Adapter(getSupportFragmentManager());
adapter.addFragment(new Diafragment(), day);
calendar.add(Calendar.DATE, 1);
date = calendar.getTime();
String dayplusone = sdf.format(date);
adapter.addFragment(new Diafragment(), dayplusone);
calendar.add(Calendar.DATE, 1);
date = calendar.getTime();
String dayplustwo = sdf.format(date);
adapter.addFragment(new Diafragment(), dayplustwo);
viewPager.setAdapter(adapter);
}
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragments = new ArrayList<>();
private final List<String> mFragmentTitles = new ArrayList<>();
public Adapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mFragmentTitles.add(title);
}
@Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
@Override
public int getCount() {
return mFragments.size();
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitles.get(position);
}
}
}
导入android.content.Intent;
导入android.os.Bundle;
导入android.support.design.widget.NavigationView;
导入android.support.design.widget.TabLayout;
导入android.support.v4.app.Fragment;
导入android.support.v4.app.FragmentManager;
导入android.support.v4.app.FragmentPagerAdapter;
导入android.support.v4.view.GravityCompat;
导入android.support.v4.view.ViewPager;
导入android.support.v4.widget.DrawerLayout;
导入android.support.v7.app.ActionBar;
导入android.support.v7.app.AppActivity;
导入android.support.v7.widget.Toolbar;
导入android.view.MenuItem;
导入android.view.view;
导入android.widget.TextView;
导入android.widget.Toast;
导入com.support.android.designlibdemo.Diafragment;
导入com.support.android.designlibdemo.R;
导入java.text.simpleDataFormat;
导入java.util.ArrayList;
导入java.util.Calendar;
导入java.util.Date;
导入java.util.List;
导入java.util.Locale;
公共类MainActivity扩展了AppCompatActivity{
私人抽屉布局mDrawerLayout;
私人视页机视页机;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar Toolbar=findviewbyd(R.id.Toolbar);
设置支持操作栏(工具栏);
viewPager=findViewById(R.id.viewPager);
if(viewPager!=null){
设置viewPager(viewPager);
}
Intent=getIntent();
字符串nome=intent.getStringExtra(“nome”);
View headerView=navigationView.getHeaderView(0);
TextView navUsername=headerView.findViewById(R.id.tv\u抽屉名称);
navUsername.setText(nome);
TabLayout TabLayout=findviewbyd(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
专用无效设置ViewPager(ViewPager ViewPager){
SimpleDataFormat sdf=新的SimpleDataFormat(“EEE”);
日期=新日期();
日历=Calendar.getInstance();
日历。设置时间(日期);
date=calendar.getTime();
字符串day=sdf.format(日期);
适配器适配器=新适配器(getSupportFragmentManager());
adapter.addFragment(新的Diafragment(),天);
calendar.add(calendar.DATE,1);
date=calendar.getTime();
字符串dayplusone=sdf.format(日期);
addFragment(新的Diafragment(),dayplusone);
calendar.add(calendar.DATE,1);
date=calendar.getTime();
字符串dayplustwo=sdf.format(日期);
addFragment(新的Diafragment(),dayplustwo);
viewPager.setAdapter(适配器);
}
静态类适配器扩展FragmentPagerAdapter{
私有最终列表MFFragments=new ArrayList();
私有最终列表MFFragmentTitles=new ArrayList();
公共适配器(FragmentManager fm){
超级(fm);
}
public void addFragment(片段片段,字符串标题){
添加(片段);
MFFragmentTitles.add(标题);
}
@凌驾
公共片段getItem(int位置){
返回mFragments.get(位置);
}
@凌驾
public int getCount(){
返回mffragments.size();
}
@凌驾
公共字符序列getPageTitle(int位置){
返回MFFragmentTitles.get(位置);
}
}
}
只需扩展ViewPager并覆盖onInterceptTouchEvent(),如图所示我实现了它,并使用CustomViewPager myViewPager;。我的疑问是,当我使用myViewPager.setOnSwipeOutliner(???)时,我应该传递什么作为参数;